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Subtract 10/18 from 12/70

12/70 - 10/18 is -121/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 18 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    12/70 = 12 × 9/70 × 9 = 108/630
  3. Likewise, for the 2nd fraction, since 18 × 35 = 630,
    10/18 = 10 × 35/18 × 35 = 350/630
  4. Subtract the two fractions:
    108/630 - 350/630 = 108 - 350/630 = -242/630
  5. After reducing the fraction, the answer is -121/315

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